Configuring admission control
Learn how to configure admission control in Impala Virtual Warehouses, including enabling and disabling the global admission controller.
Enabling admission control
The admission controller is designed to handle query admission in Impala Virtual
Warehouses that have more than one active coordinator. Admission control is enabled by
default when a new Impala Virtual Warehouse is created in High Availability (HA)
Active-Active mode.
Disabling admission control
Admission control is enabled by default if you have configured an Active-Active Impala
coordinator to run in an Impala Virtual Warehouse. However, for debugging or other purposes,
you can disable the global admission controller by performing the following steps:
- Log in to the Cloudera web interface and navigate to the Cloudera Data Warehouse service. The Overview page displays.
- In the Overview page under Virtual
Warehouses tab, select the Virtual Warehouse where you want to disable
admission controller, click the
icon and select the Edit action form
the list of actions. - In the Sizing And Scaling tab, view the properties you can adjust to disable the service.
- Deselect the Enable Global Admission Controller checkbox.
- Click the Apply changes button at the bottom of the page to apply your changes.
